Palladium is similar in appearance to white gold, but since it
does not have nickel as one of its ingredients, palladium is
hypoallergenic. Palladium is considered a lightweight metal,
similar in weight to 14K gold. Palladium metal can coat a ring or
the ring can be "950 palladium," 95% palladium and 5% ruthenium,
with possibly other traces of metal.